[Nook Color General] legoverse:
Better late than never...

Wow. Thanks so much to the OP and everyone who has contributed to this thread.

I tested all 3 of my mSD's with (unsurprisingly) dismal results. I have been using a Transcend class 6 for over a month now, and it usually works OK, until it suddenly goes into force close hell. I had bought a Patriot class 10 at the same time, but used it very little due to later reading about stability issues with 10's. And I have a Kingston class 4 in my DS Lite, but never tried it in the NC.

So below are the CDM results for all three, as well as a new SANDISK class 4 16gb I bought this morning at the 'the Shack'. :) The CDM test shows it's not a speed demon, but it seems to be respectable.

From everything said on this thread, the Sandisk should vastly improve things. Here is a summary of all four tests (in thread table format), followed by the full CDM results for each. I will post back after a while with my impressions of using the Sandisk. (no http links due to new poster rules)

POSTER BRAND CLASS CAPACITY 4 KB RANDOM
(GB) WRITE QD32(MB/s) NOTE
legoverse Sandisk 4 16 0.510 Model: SDSDQ-016G-A11M
legoverse Kingston 4 4 0.024 3 yrs old, ALL tests faster than class 10 Patriot!
legoverse Transend 6 8 0.018 Model: TS8GUSDHC6E
legoverse Patriot 10 8 0.014 Model: PSF8GMCSDHC10
.
.

All tests performed with Sandisk MobileMate Micro Reader. Amazon product #B0012Y02CE

Transcend Class 6

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CrystalDiskMark 3.0.1 (C) 2007-2010 hiyohiyo

Crystal Dew World :

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* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 14.487 MB/s

Sequential Write : 17.941 MB/s

Random Read 512KB : 13.928 MB/s

Random Write 512KB : 1.686 MB/s

Random Read 4KB (QD=1) : 2.222 MB/s [ 542.4 IOPS]

Random Write 4KB (QD=1) : 0.017 MB/s [ 4.0 IOPS]

Random Read 4KB (QD=32) : 2.407 MB/s [ 587.7 IOPS]

Random Write 4KB (QD=32) : 0.018 MB/s [ 4.4 IOPS]

Test : 50 MB [E: 9.6% (11.1/115.8 MB)] (x5)

Date : 2011/06/08 2:55:50

OS : Windows XP Professional SP2 [5.1 Build 2600] (x86)

Card : Transcend Class 6 8gb TS8GUSDHC6E

Amazon : Amazon product #B0026L7DG0

Note : Card got HOT during testing. This is my CM7 card. Currently on nightly -87.

Errata : Shipped on April 1st, 2011. I'll let you ponder the significance of that.

Patriot Class 10

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CrystalDiskMark 3.0.1 (C) 2007-2010 hiyohiyo

Crystal Dew World :

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* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 18.552 MB/s

Sequential Write : 9.027 MB/s

Random Read 512KB : 18.565 MB/s

Random Write 512KB : 1.457 MB/s

Random Read 4KB (QD=1) : 3.868 MB/s [ 944.4 IOPS]

Random Write 4KB (QD=1) : 0.015 MB/s [ 3.7 IOPS]

Random Read 4KB (QD=32) : 4.376 MB/s [ 1068.3 IOPS]

Random Write 4KB (QD=32) : 0.014 MB/s [ 3.5 IOPS]

Test : 50 MB [E: 9.5% (11.0/115.8 MB)] (x5)

Date : 2011/06/08 3:17:22

OS : Windows XP Professional SP2 [5.1 Build 2600] (x86)

Card : Patriot Class 10 8gb PSF8GMCSDHC10

Newegg : Newegg product #N82E16820220493

Note : Card was Warm during testing. Not in use after hearing class 10's are unstable.

Kingston Class 4

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CrystalDiskMark 3.0.1 (C) 2007-2010 hiyohiyo

Crystal Dew World :

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* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 19.216 MB/s

Sequential Write : 9.095 MB/s

Random Read 512KB : 19.135 MB/s

Random Write 512KB : 2.547 MB/s

Random Read 4KB (QD=1) : 4.459 MB/s [ 1088.6 IOPS]

Random Write 4KB (QD=1) : 0.022 MB/s [ 5.3 IOPS]

Random Read 4KB (QD=32) : 4.527 MB/s [ 1105.2 IOPS]

Random Write 4KB (QD=32) : 0.024 MB/s [ 5.9 IOPS]

Test : 50 MB [E: 87.8% (3435.2/3912.3 MB)] (x5)

Date : 2011/06/08 3:44:26

OS : Windows XP Professional SP2 [5.1 Build 2600] (x86)

Card : Kingston Class 4 4gb SDC4/4GBET

Amazon : Amazon product #B000VX6XL6

Note : Card got Very Warm during testing. From Oct. 2008, used in a DS Lite.

Errata : Interesting that this is faster in every respect than the Patriot class 10.

Sandisk Class 4

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CrystalDiskMark 3.0.1 (C) 2007-2010 hiyohiyo

Crystal Dew World :

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* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 10.632 MB/s

Sequential Write : 6.086 MB/s

Random Read 512KB : 10.507 MB/s

Random Write 512KB : 2.072 MB/s

Random Read 4KB (QD=1) : 2.568 MB/s [ 626.9 IOPS]

Random Write 4KB (QD=1) : 0.506 MB/s [ 123.6 IOPS]

Random Read 4KB (QD=32) : 2.708 MB/s [ 661.1 IOPS]

Random Write 4KB (QD=32) : 0.510 MB/s [ 124.6 IOPS]

Test : 50 MB [E: 0.0% (0.0/14.8 GB)] (x5)

Date : 2011/06/08 21:30:45

OS : Windows XP Professional SP2 [5.1 Build 2600] (x86)

Card : Sandisk Class 4 16gb SDSDQ-016G-A11M

Shack : Radio Shack product #3522502

Note : Card got Warm during testing. This will be my new CM7 card. Yippee!

Errata : Couldn't wait, bought at a local Radio Shack $32 with tax. (on sale thru 6/11)

Thanks again to EVERYONE!